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See detailAttention bias modification training for adolescents with chronic pain: A randomized placebo-controlled trial
Heathcote, Lauren C; Jacobs, Conrad; van Ryckeghem, Dimitri UL et al

in Pain (in press)

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See detailPain and Attention: Towards a Motivational Account
van Ryckeghem, Dimitri UL; Crombez, Geert

Book published by Oxford University Press (in press)

Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this ... [more ▼]

Attention plays a pivotal role in the experience of pain and its impact upon daily activities. Accordingly, research on the interplay between attention and pain has a long scientific history. Within this chapter, we discuss the theoretical frameworks that aim to explain the relationship between attention and pain. We argue for a motivational perspective on pain that highlights the critical role of cognitive, affective and contextual factors in explaining the interplay between attention and pain. To substantiate this argument, we provide an overview of available research addressing the bottom-up capture of attention by pain and the top-down modulation (both inhibition and facilitation) of attention for pain. We conclude this chapter with guidelines and suggestions for future research and discuss clinical implications of adopting a motivational perspective on pain. [less ▲]

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See detailVisuo-spatial abilities are key for young children’s verbal number skills
Cornu, Véronique UL; Schiltz, Christine UL; Martin, Romain UL et al

in Journal of Experimental Child Psychology (in press)

Children’s development of verbal number skills (i.e, counting abilities and knowledge of the number names) presents a milestone in mathematical development. Different factors such as visuo-spatial and ... [more ▼]

Children’s development of verbal number skills (i.e, counting abilities and knowledge of the number names) presents a milestone in mathematical development. Different factors such as visuo-spatial and verbal abilities have been discussed to contribute to the development of these foundational skills. To understand the cognitive nature of verbal number skills in young children, the present study assessed the relation of preschoolers’ verbal and visuo-spatial abilities to their verbal number skills. In total, 141 children aged between five and six years participated in the present study. Verbal number skills were regressed on vocabulary, phonological awareness and visuo-spatial abilities, as well as verbal and visuo-spatial working memory in a structural equation model. Only visuo-spatial abilities emerged as a significant predictor of verbal number skills in the estimated model. Our results suggest that visuo-spatial abilities contribute to a larger extent to children’s verbal number skills than verbal abilities. From a theoretical point of view, these results suggest a visuo-spatial, rather than a verbal, grounding of verbal number skills. These results are potentially informative for the conception of early mathematics assessments and interventions. [less ▲]

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See detailEmotionally laden impulsivity interacts with affect in predicting addictive use of online sexual activity in men
Wéry, Aline; Deleuze, Jory; Canale, Natale et al

in Comprehensive Psychiatry (in press)

The interest in studying addictive use of online sexual activities (OSA) has grown sharply over the last decade. Despite the burgeoning number of studies conceptualizing the excessive use of OSA as an ... [more ▼]

The interest in studying addictive use of online sexual activities (OSA) has grown sharply over the last decade. Despite the burgeoning number of studies conceptualizing the excessive use of OSA as an addictive disorder, few have tested its relations to impulsivity, which is known to constitute a hallmark of addictive behaviors. To address this missing gap in the literature, we tested the relationships between addictive OSA use, impulsivity traits, and affect among a convenience sample of men (N = 182; age, M = 29.17), building upon a theoretically driven model that distinguishes the various facets of impulsivity. Results showed that negative urgency (an impulsivity trait reflecting the tendency to act rashly in negative emotional states) and negative affect interact in predicting addictive OSA use. These results highlight the pivotal role played by negative urgency and negative affect in addictive OSA use, supporting the relevance of psychological interventions that focus on improving emotional regulation (e.g., to reduce negative affect and learn healthier coping strategies) to mitigate excessive use of OSA. [less ▲]

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See detailA Multiscale DEM-VOF Method for the simulation of three-phase flows
Pozzetti, Gabriele UL; Peters, Bernhard UL

in International Journal of Multiphase Flow (in press)

A novel multiscale approach for three-phase flows is presented. The goal of the proposed method is to solve arbitrary three-phase flow configurations in a computationally efficient way, and in particular ... [more ▼]

A novel multiscale approach for three-phase flows is presented. The goal of the proposed method is to solve arbitrary three-phase flow configurations in a computationally efficient way, and in particular taking into account the effects of different length scales while sharply reducing the computational burden. This is particularly important in chemical, environmental, and process engineering, where large-scale quantities are normally of interest, but small-scale dynamics cannot be neglected. The method is based on the definition of two different length scales: the bulk scale, and the fluid fine scale. A dual-grid approach is adopted in order to resolve the bulk scale with information from the fluid fine scale. It is shown that the described method succeeds in delivering more accuracy than a standard approach based on the volume averaging technique, still, it remains suitable for the solution of real interest problems. The method is shown to successfully satisfy experimental results presented in the literature. Examples of three-phase flows simulations are provided to show how the proposed numerical approach can describe the physics of particle-laden, free surface flows with competitive computational cost. It is shown how the proposed method can naturally extend the DEM-VOF method to the presence of complex interface dynamics. [less ▲]

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See detailComprendre la procédure civile québécoise
Menetrey, Séverine UL; Guillemard, Sylvette

Book published by Yvon Blais (2018)

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See detailElectoral Violence in the Western Balkans. From Voting to Fighting and Back
Mochtak, Michal UL

Book published by Routledge (2018)

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See detailDynamische Mathematik und computergestützte Tests: GeoGebra in TAO
Kreis, Yves UL; Dording, Carole; Keller, Ulrich UL et al

in Weinberger, Armin; Ladel, Silke; Knopf, Julia (Eds.) Digitalisierung und Bildung (2018)

In diesem Beitrag stellen wir die Integration der Dynamischen-Mathematik-Software GeoGebra in die technologiebasierte Assessment-Plattform TAO vor. Diese Kombination von Anwendungen schafft neue Lern-

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See detailOn a geometric framework for Lagrangian supermechanics
Bruce, Andrew UL; Grabowska, Katarzyna; Moreno, Giovanni

in The Journal of Geometric Mechanics (2017), 9(4), 411-437

We re--examine classical mechanics with both commuting and anticommuting degrees of freedom. We do this by defining the phase dynamics of a general Lagrangian system as an implicit differential equation ... [more ▼]

We re--examine classical mechanics with both commuting and anticommuting degrees of freedom. We do this by defining the phase dynamics of a general Lagrangian system as an implicit differential equation in the spirit of Tulczyjew. Rather than parametrising our basic degrees of freedom by a specified Grassmann algebra, we use arbitrary supermanifolds by following the categorical approach to supermanifolds. [less ▲]

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See detailThe Cipher, the Random and the Ransom: A Survey on Current and Future Ransomware
Genç, Ziya Alper UL; Lenzini, Gabriele UL; Ryan, Peter UL

Scientific Conference (2017, November 17)

Although conceptually not new, ransomware recently regained attraction in the cybersecurity community: notorious attacks in fact have caused serious damage, proving their disruptive effect. This is likely ... [more ▼]

Although conceptually not new, ransomware recently regained attraction in the cybersecurity community: notorious attacks in fact have caused serious damage, proving their disruptive effect. This is likely just the beginning of a new era. According to a recent intelligence report by Cybersecurity Ventures, the total cost due to ransomware attacks is predicted to exceed $5 billion in 2017. How can this disruptive threat can be contained? Current anti-ransomware solutions are effective only against existing threats, and the worst is yet to come. Cyber criminals will design and deploy more sophisticated strategies, overcoming current defenses and, as it commonly happens in security, defenders and attackers will embrace a competition that will never end. In this arm race, anticipating how current ransomware will evolve may help at least being prepared for some future damage. In this paper, we describe existing techniques to mitigate ransomware and we discuss their limitations. Discussing how current ransomware could become even more disruptive and elusive is crucial to conceive more solid defense and systems that can mitigate zero-day ransomware, yielding higher security levels for information systems, including critical infrastructures such as intelligent transportation networks and health institutions. [less ▲]

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See detailAnalysis of Fingerprinting Techniques for Tor Hidden Services
Panchenko, Andriy UL; Mitseva, Asya UL; Henze, Martin et al

in Proceedings of the 24th ACM Computer and Communications Security (ACM CCS) 16th Workshop on Privacy in the Electronic Society (ACM WPES 2017) (2017, October 31)

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See detailThe dialectic of transnational integration and national disintegration as mayor challenge of the aggregation of knowledge by European Expert Groups
Decieux, Jean Philippe Pierre UL

Scientific Conference (2017, October 14)

From a phenomenological perspective on modern systems of knowledge production a transformation towards a hybrid knowledge production has taken place. Categories like locality or embeddedness have been ... [more ▼]

From a phenomenological perspective on modern systems of knowledge production a transformation towards a hybrid knowledge production has taken place. Categories like locality or embeddedness have been overcome and rise of arenas of cross-broader-cooperation can be observed. The political sector is an important example where a rise of decision-making contexts with supra national relevance can be detected. As consequence a transformation of the political advisory-system towards the genesis of multinational advisory organisations on supranational level can be observed. This means that decision-making knowledge is developed and standardized on supranational level and supposed to be applied top-down on local level. Theoretically such a cooperative form of knowledge co-production of application-driven knowledge by a heterogeneous set of stakeholders aims to produce a context specific solution for specific problems of application (“socially robust knowledge”) in order to provide evidence-based policy-making. But in fact such a processes of unification of knowledge on supranational level often reduces national policy autonomy and is associated with the risk of limited compliance to the specific local needs. Thus the universal transnational knowledge is systematically contested by a variety of particularistic relevancies as is lacks in socially robustness for the application on national decision-making level (“dialectic of transnational integration and disintegration “. This paper analyses how national policy systems are responding to global integration initiatives. By using an in-depth-case-study, I focus especially on individual actors and their responses in the light of a multiplicity of institutional relevancies and the effective social robustness of the aggregated knowledge on national level. [less ▲]

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See detail“They can communicate, BUT…” - Language learning goals of forced migrants in multilingual Luxembourg
Kalocsanyiova, Erika UL

Scientific Conference (2017, October 13)

This contribution presents data from an ongoing doctoral research project that focuses on the linguistic integration trajectory of Syrian and Iraqi refugees in Luxembourg. Drawing on interview data and ... [more ▼]

This contribution presents data from an ongoing doctoral research project that focuses on the linguistic integration trajectory of Syrian and Iraqi refugees in Luxembourg. Drawing on interview data and classroom observations we explore teachers’ and learners’ attitudes towards Luxembourg’s main languages and their beliefs about how to approach language learning in a multilingual society. Upon arrival, refugees are immediately exposed to the country’s immense linguistic diversity along with ambiguous and often competing ideologies as to what languages to learn. While French is the main vernacular language, English has been gaining importance as lingua franca of the Grand Duchy’s large international community. Government sources increasingly emphasise the role of Luxembourgish as the sole language of integration, despite its minority position in several domains. Other languages such as German or Portuguese might be equally important for navigating local life. Refugees from regions where (a regional/dialectal form of) Arabic enjoys the status of majority language, are expected to encounter difficulties in adapting to the complex language situation of Luxembourg. As a result, the research participants have shown a strong interest in developing different capabilities in a variety of languages and for a range of purposes. Our data confirms that wide-ranging learning outcomes are pursued in this context. While teachers acknowledge the importance of this aspect for setting language learning goals, system-wide, policy-declared goals still prevail in their pedagogical practice. Yet, we have observed instances of more holistic approaches that recognize the multilingual character of communication and learning, and take better account of the learners’ short- and long-term expectations. [less ▲]

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See detailUne vision d’avenir pour l’Europe. Pertinence et modernité des préconisations contenues dans le rapport Werner d’octobre 1970
Danescu, Elena UL

Article for general public (2017)

Le 8 octobre 1970, Pierre Werner présentait à Luxembourg le plan de réalisation par étapes de l’Union économique et monétaire dans la Communauté - le rapport Werner . Presque cinquante ans après, cette ... [more ▼]

Le 8 octobre 1970, Pierre Werner présentait à Luxembourg le plan de réalisation par étapes de l’Union économique et monétaire dans la Communauté - le rapport Werner . Presque cinquante ans après, cette réflexion clairvoyante forgée en temps de crise et qui a dessiné l’UEM dans ses moindres détails, s’avère d’une étonnante modernité. [less ▲]

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See detailMagnetic SANS as a probe to disclose internal interfaces and the spin structure of nanoparticles
Michels, Andreas UL

Scientific Conference (2017, October 11)

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See detailLes acteurs économiques catalans sont inquiets
Högenauer, Anna-Lena UL

Article for general public (2017)

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See detailOn the Concept of a Filtered Bundle
Bruce, Andrew UL; Grabowska, Katarzyna; Grabowski, Janusz

in International Journal of Geometric Methods in Modern Physics (2017), 15

We present the notion of a filtered bundle as a generalization of a graded bundle. In particular, we weaken the necessity of the transformation laws for local coordinates to exactly respect the weight of ... [more ▼]

We present the notion of a filtered bundle as a generalization of a graded bundle. In particular, we weaken the necessity of the transformation laws for local coordinates to exactly respect the weight of the coordinates by allowing more general polynomial transformation laws. The key examples of such bundles include affine bundles and various jet bundles, both of which play fundamental roles in geometric mechanics and classical field theory. We also present the notion of double filtered bundles which provide natural generalizations of double vector bundles and double affine bundles. Furthermore, we show that the linearization of a filtered bundle — which can be seen as a partial polarization of the admissible changes of local coordinates — is well defined. [less ▲]

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See detailRare GABRA3 variants are associated with epileptic seizures, encephalopathy and dysmorphic features
Niturad, Elena Christina; Lev, Dorit; Kalscheuer, Vera M et al

in Brain : A Journal of Neurology (2017)

Genetic epilepsies are caused by mutations in a range of different genes, many of them encoding ion channels, receptors or transporters. While the number of detected variants and genes increased ... [more ▼]

Genetic epilepsies are caused by mutations in a range of different genes, many of them encoding ion channels, receptors or transporters. While the number of detected variants and genes increased dramatically in the recent years, pleiotropic effects have also been recognized, revealing that clinical syndromes with various degrees of severity arise from a single gene, a single mutation, or from different mutations showing similar functional defects. Accordingly, several genes coding for GABAA receptor subunits have been linked to a spectrum of benign to severe epileptic disorders and it was shown that a loss of function presents the major correlated pathomechanism. Here, we identified six variants in GABRA3 encoding the α3-subunit of the GABAA receptor. This gene is located on chromosome Xq28 and has not been previously associated with human disease. Five missense variants and one microduplication were detected in four families and two sporadic cases presenting with a range of epileptic seizure types, a varying degree of intellectual disability and developmental delay, sometimes with dysmorphic features or nystagmus. The variants co-segregated mostly but not completely with the phenotype in the families, indicating in some cases incomplete penetrance, involvement of other genes, or presence of phenocopies. Overall, males were more severely affected and there were three asymptomatic female mutation carriers compared to only one male without a clinical phenotype. X-chromosome inactivation studies could not explain the phenotypic variability in females. Three detected missense variants are localized in the extracellular GABA-binding NH2-terminus, one in the M2-M3 linker and one in the M4 transmembrane segment of the α3-subunit. Functional studies in Xenopus laevis oocytes revealed a variable but significant reduction of GABA-evoked anion currents for all mutants compared to wild-type receptors. The degree of current reduction correlated partially with the phenotype. The microduplication disrupted GABRA3 expression in fibroblasts of the affected patient. In summary, our results reveal that rare loss-of-function variants in GABRA3 increase the risk for a varying combination of epilepsy, intellectual disability/developmental delay and dysmorphic features, presenting in some pedigrees with an X-linked inheritance pattern. [less ▲]

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See detailThe Implementation of the Cross-Border Mergers Directive in Luxembourg - A Critical Assessment
Corbisier, Isabelle UL

Scientific Conference (2017, October 07)

Many cross-border mergers do take place in Luxembourg. Most practical difficulties in implementing the new regime were solved in the first months/years following the transposal of the Cross-Border Mergers ... [more ▼]

Many cross-border mergers do take place in Luxembourg. Most practical difficulties in implementing the new regime were solved in the first months/years following the transposal of the Cross-Border Mergers directive. As a matter of fact most of the cross-border mergers taking place in Luxembourg are of a rather uncomplicated kind as they are often intra-group mergers, between companies with no or very few employees and furthermore in a vast majority of cases between a parent company and its 100% subsidiary. In the most recent practice however, the following questions/issues were raised : - the directive only addresses mergers. Other restructurings such as divisions, transfers of assets, of a branch of activity or of the universality of the company’s assets are not covered by the directive and this even though they can likewise take place across the borders and can be difficult to carry out in the absence of some harmonized regime; - a new company law reform was recently adopted in Luxembourg, introducing, a.o., a new article 1865bis in the Civil Code that allows “dissolution-confusion” in one-shareholder companies. The question can be raised whether this provision could be applied across the borders (f.e. could a French company being the sole shareholder of a Luxembourg company decide to dissolve it without having to consider the provisions of the Cross-Border Mergers Directive ?); - another provision of the recently adopted company law reform does re-balance things when considering the cross-border merger as a means for the company to change “nationality” (or law applicable thereto). In the past companies were eventually forced to use the detour of the CBM in order to avoid the requirement of unanimity imposed by law for the transfer of the seat. Since aforementioned reform unanimity is no longer required for the cross-border transfer of the seat. The usefulness of the Cross-Border Merger Directive is therefore not in the least questioned in Luxembourg but it is regrettable that this would appear part of a “work-in-progress” that however does not show concrete signs of being completed any time soon. [less ▲]

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